bfd/libcoff.h

   1 /* DO NOT EDIT!  -*- buffer-read-only: t -*-  This file is automatically
   2    generated from "libcoff-in.h" and "coffcode.h".
   3    Run "make headers" in your build bfd/ to regenerate.  */
   4
   5 /* BFD COFF object file private structure.
   6    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
   7    2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
   8    Free Software Foundation, Inc.
   9    Written by Cygnus Support.
  10
  11    This file is part of BFD, the Binary File Descriptor library.
  12
  13    This program is free software; you can redistribute it and/or modify
  14    it under the terms of the GNU General Public License as published by
  15    the Free Software Foundation; either version 3 of the License, or
  16    (at your option) any later version.
  17
  18    This program is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21    GNU General Public License for more details.
  22
  23    You should have received a copy of the GNU General Public License
  24    along with this program; if not, write to the Free Software
  25    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  26    MA 02110-1301, USA.  */
  27
  28 #include "bfdlink.h"
  29
  30 /* Object file tdata; access macros.  */
  31
  32 #define coff_data(bfd)                ((bfd)->tdata.coff_obj_data)
  33 #define exec_hdr(bfd)                 (coff_data (bfd)->hdr)
  34 #define obj_pe(bfd)                   (coff_data (bfd)->pe)
  35 #define obj_symbols(bfd)              (coff_data (bfd)->symbols)
  36 #define obj_sym_filepos(bfd)          (coff_data (bfd)->sym_filepos)
  37 #define obj_relocbase(bfd)            (coff_data (bfd)->relocbase)
  38 #define obj_raw_syments(bfd)          (coff_data (bfd)->raw_syments)
  39 #define obj_raw_syment_count(bfd)     (coff_data (bfd)->raw_syment_count)
  40 #define obj_convert(bfd)              (coff_data (bfd)->conversion_table)
  41 #define obj_conv_table_size(bfd)      (coff_data (bfd)->conv_table_size)
  42 #define obj_coff_external_syms(bfd)   (coff_data (bfd)->external_syms)
  43 #define obj_coff_keep_syms(bfd)       (coff_data (bfd)->keep_syms)
  44 #define obj_coff_strings(bfd)         (coff_data (bfd)->strings)
  45 #define obj_coff_keep_strings(bfd)    (coff_data (bfd)->keep_strings)
  46 #define obj_coff_sym_hashes(bfd)      (coff_data (bfd)->sym_hashes)
  47 #define obj_coff_strings_written(bfd) (coff_data (bfd)->strings_written)
  48 #define obj_coff_local_toc_table(bfd) (coff_data (bfd)->local_toc_sym_map)
  49
  50 /* `Tdata' information kept for COFF files.  */
  51
  52 typedef struct coff_tdata
  53 {
  54   struct coff_symbol_struct *symbols;   /* Symtab for input bfd.  */
  55   unsigned int *conversion_table;
  56   int conv_table_size;
  57   file_ptr sym_filepos;
  58
  59   struct coff_ptr_struct *raw_syments;
  60   unsigned long raw_syment_count;
  61
  62   /* These are only valid once writing has begun.  */
  63   long int relocbase;
  64
  65   /* These members communicate important constants about the symbol table
  66      to GDB's symbol-reading code.  These `constants' unfortunately vary
  67      from coff implementation to implementation...  */
  68   unsigned local_n_btmask;
  69   unsigned local_n_btshft;
  70   unsigned local_n_tmask;
  71   unsigned local_n_tshift;
  72   unsigned local_symesz;
  73   unsigned local_auxesz;
  74   unsigned local_linesz;
  75
  76   /* The unswapped external symbols.  May be NULL.  Read by
  77      _bfd_coff_get_external_symbols.  */
  78   void * external_syms;
  79   /* If this is TRUE, the external_syms may not be freed.  */
  80   bfd_boolean keep_syms;
  81
  82   /* The string table.  May be NULL.  Read by
  83      _bfd_coff_read_string_table.  */
  84   char *strings;
  85   /* If this is TRUE, the strings may not be freed.  */
  86   bfd_boolean keep_strings;
  87   /* If this is TRUE, the strings have been written out already.  */
  88   bfd_boolean strings_written;
  89
  90   /* Is this a PE format coff file?  */
  91   int pe;
  92   /* Used by the COFF backend linker.  */
  93   struct coff_link_hash_entry **sym_hashes;
  94
  95   /* Used by the pe linker for PowerPC.  */
  96   int *local_toc_sym_map;
  97
  98   struct bfd_link_info *link_info;
  99
 100   /* Used by coff_find_nearest_line.  */
 101   void * line_info;
 102
 103   /* A place to stash dwarf2 info for this bfd.  */
 104   void * dwarf2_find_line_info;
 105
 106   /* The timestamp from the COFF file header.  */
 107   long timestamp;
 108
 109   /* Copy of some of the f_flags bits in the COFF filehdr structure,
 110      used by ARM code.  */
 111   flagword flags;
 112
 113 } coff_data_type;
 114
 115 /* Tdata for pe image files.  */
 116 typedef struct pe_tdata
 117 {
 118   coff_data_type coff;
 119   struct internal_extra_pe_aouthdr pe_opthdr;
 120   int dll;
 121   int has_reloc_section;
 122   bfd_boolean (*in_reloc_p) (bfd *, reloc_howto_type *);
 123   flagword real_flags;
 124   int target_subsystem;
 125   bfd_boolean force_minimum_alignment;
 126 } pe_data_type;
 127
 128 #define pe_data(bfd)            ((bfd)->tdata.pe_obj_data)
 129
 130 /* Tdata for XCOFF files.  */
 131
 132 struct xcoff_tdata
 133 {
 134   /* Basic COFF information.  */
 135   coff_data_type coff;
 136
 137   /* TRUE if this is an XCOFF64 file. */
 138   bfd_boolean xcoff64;
 139
 140   /* TRUE if a large a.out header should be generated.  */
 141   bfd_boolean full_aouthdr;
 142
 143   /* TOC value.  */
 144   bfd_vma toc;
 145
 146   /* Index of section holding TOC.  */
 147   int sntoc;
 148
 149   /* Index of section holding entry point.  */
 150   int snentry;
 151
 152   /* .text alignment from optional header.  */
 153   int text_align_power;
 154
 155   /* .data alignment from optional header.  */
 156   int data_align_power;
 157
 158   /* modtype from optional header.  */
 159   short modtype;
 160
 161   /* cputype from optional header.  */
 162   short cputype;
 163
 164   /* maxdata from optional header.  */
 165   bfd_vma maxdata;
 166
 167   /* maxstack from optional header.  */
 168   bfd_vma maxstack;
 169
 170   /* Used by the XCOFF backend linker.  */
 171   asection **csects;
 172   unsigned long *debug_indices;
 173   unsigned int import_file_id;
 174 };
 175
 176 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
 177
 178 /* We take the address of the first element of an asymbol to ensure that the
 179    macro is only ever applied to an asymbol.  */
 180 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
 181
 182 /* The used_by_bfd field of a section may be set to a pointer to this
 183    structure.  */
 184
 185 struct coff_section_tdata
 186 {
 187   /* The relocs, swapped into COFF internal form.  This may be NULL.  */
 188   struct internal_reloc *relocs;
 189   /* If this is TRUE, the relocs entry may not be freed.  */
 190   bfd_boolean keep_relocs;
 191   /* The section contents.  This may be NULL.  */
 192   bfd_byte *contents;
 193   /* If this is TRUE, the contents entry may not be freed.  */
 194   bfd_boolean keep_contents;
 195   /* Information cached by coff_find_nearest_line.  */
 196   bfd_vma offset;
 197   unsigned int i;
 198   const char *function;
 199   /* Optional information about a COMDAT entry; NULL if not COMDAT. */
 200   struct coff_comdat_info *comdat;
 201   int line_base;
 202   /* A pointer used for .stab linking optimizations.  */
 203   void * stab_info;
 204   /* Available for individual backends.  */
 205   void * tdata;
 206 };
 207
 208 /* An accessor macro for the coff_section_tdata structure.  */
 209 #define coff_section_data(abfd, sec) \
 210   ((struct coff_section_tdata *) (sec)->used_by_bfd)
 211
 212 /* Tdata for sections in XCOFF files.  This is used by the linker.  */
 213
 214 struct xcoff_section_tdata
 215 {
 216   /* Used for XCOFF csects created by the linker; points to the real
 217      XCOFF section which contains this csect.  */
 218   asection *enclosing;
 219   /* The lineno_count field for the enclosing section, because we are
 220      going to clobber it there.  */
 221   unsigned int lineno_count;
 222   /* The first and one past the last symbol indices for symbols used
 223      by this csect.  */
 224   unsigned long first_symndx;
 225   unsigned long last_symndx;
 226 };
 227
 228 /* An accessor macro the xcoff_section_tdata structure.  */
 229 #define xcoff_section_data(abfd, sec) \
 230   ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 231
 232 /* Tdata for sections in PE files.  */
 233
 234 struct pei_section_tdata
 235 {
 236   /* The virtual size of the section.  */
 237   bfd_size_type virt_size;
 238   /* The PE section flags.  */
 239   long pe_flags;
 240 };
 241
 242 /* An accessor macro for the pei_section_tdata structure.  */
 243 #define pei_section_data(abfd, sec) \
 244   ((struct pei_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
 245
 246 /* COFF linker hash table entries.  */
 247
 248 struct coff_link_hash_entry
 249 {
 250   struct bfd_link_hash_entry root;
 251
 252   /* Symbol index in output file.  Set to -1 initially.  Set to -2 if
 253      there is a reloc against this symbol.  */
 254   long indx;
 255
 256   /* Symbol type.  */
 257   unsigned short type;
 258
 259   /* Symbol class.  */
 260   unsigned char class;
 261
 262   /* Number of auxiliary entries.  */
 263   char numaux;
 264
 265   /* BFD to take auxiliary entries from.  */
 266   bfd *auxbfd;
 267
 268   /* Pointer to array of auxiliary entries, if any.  */
 269   union internal_auxent *aux;
 270
 271   /* Flag word; legal values follow.  */
 272   unsigned short coff_link_hash_flags;
 273   /* Symbol is a PE section symbol.  */
 274 #define COFF_LINK_HASH_PE_SECTION_SYMBOL (01)
 275 };
 276
 277 /* COFF linker hash table.  */
 278
 279 struct coff_link_hash_table
 280 {
 281   struct bfd_link_hash_table root;
 282   /* A pointer to information used to link stabs in sections.  */
 283   struct stab_info stab_info;
 284 };
 285
 286 /* Look up an entry in a COFF linker hash table.  */
 287
 288 #define coff_link_hash_lookup(table, string, create, copy, follow)      \
 289   ((struct coff_link_hash_entry *)                                      \
 290    bfd_link_hash_lookup (&(table)->root, (string), (create),            \
 291                          (copy), (follow)))
 292
 293 /* Traverse a COFF linker hash table.  */
 294
 295 #define coff_link_hash_traverse(table, func, info)                      \
 296   (bfd_link_hash_traverse                                               \
 297    (&(table)->root,                                                     \
 298     (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \
 299     (info)))
 300
 301 /* Get the COFF linker hash table from a link_info structure.  */
 302
 303 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
 304
 305 /* Functions in coffgen.c.  */
 306 extern const bfd_target *coff_object_p
 307   (bfd *);
 308 extern struct bfd_section *coff_section_from_bfd_index
 309   (bfd *, int);
 310 extern long coff_get_symtab_upper_bound
 311   (bfd *);
 312 extern long coff_canonicalize_symtab
 313   (bfd *, asymbol **);
 314 extern int coff_count_linenumbers
 315   (bfd *);
 316 extern struct coff_symbol_struct *coff_symbol_from
 317   (bfd *, asymbol *);
 318 extern bfd_boolean coff_renumber_symbols
 319   (bfd *, int *);
 320 extern void coff_mangle_symbols
 321   (bfd *);
 322 extern bfd_boolean coff_write_symbols
 323   (bfd *);
 324 extern bfd_boolean coff_write_linenumbers
 325   (bfd *);
 326 extern alent *coff_get_lineno
 327   (bfd *, asymbol *);
 328 extern asymbol *coff_section_symbol
 329   (bfd *, char *);
 330 extern bfd_boolean _bfd_coff_get_external_symbols
 331   (bfd *);
 332 extern const char *_bfd_coff_read_string_table
 333   (bfd *);
 334 extern bfd_boolean _bfd_coff_free_symbols
 335   (bfd *);
 336 extern struct coff_ptr_struct *coff_get_normalized_symtab
 337   (bfd *);
 338 extern long coff_get_reloc_upper_bound
 339   (bfd *, sec_ptr);
 340 extern asymbol *coff_make_empty_symbol
 341   (bfd *);
 342 extern void coff_print_symbol
 343   (bfd *, void * filep, asymbol *, bfd_print_symbol_type);
 344 extern void coff_get_symbol_info
 345   (bfd *, asymbol *, symbol_info *ret);
 346 extern bfd_boolean _bfd_coff_is_local_label_name
 347   (bfd *, const char *);
 348 extern asymbol *coff_bfd_make_debug_symbol
 349   (bfd *, void *, unsigned long);
 350 extern bfd_boolean coff_find_nearest_line
 351   (bfd *, asection *, asymbol **, bfd_vma, const char **,
 352    const char **, unsigned int *);
 353 extern bfd_boolean coff_find_inliner_info
 354   (bfd *, const char **, const char **, unsigned int *);
 355 extern int coff_sizeof_headers
 356   (bfd *, struct bfd_link_info *);
 357 extern bfd_boolean bfd_coff_reloc16_relax_section
 358   (bfd *, asection *, struct bfd_link_info *, bfd_boolean *);
 359 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
 360   (bfd *, struct bfd_link_info *, struct bfd_link_order *,
 361    bfd_byte *, bfd_boolean, asymbol **);
 362 extern bfd_vma bfd_coff_reloc16_get_value
 363   (arelent *, struct bfd_link_info *, asection *);
 364 extern void bfd_perform_slip
 365   (bfd *, unsigned int, asection *, bfd_vma);
 366
 367 /* Functions and types in cofflink.c.  */
 368
 369 #define STRING_SIZE_SIZE 4
 370
 371 /* We use a hash table to merge identical enum, struct, and union
 372    definitions in the linker.  */
 373
 374 /* Information we keep for a single element (an enum value, a
 375    structure or union field) in the debug merge hash table.  */
 376
 377 struct coff_debug_merge_element
 378 {
 379   /* Next element.  */
 380   struct coff_debug_merge_element *next;
 381
 382   /* Name.  */
 383   const char *name;
 384
 385   /* Type.  */
 386   unsigned int type;
 387
 388   /* Symbol index for complex type.  */
 389   long tagndx;
 390 };
 391
 392 /* A linked list of debug merge entries for a given name.  */
 393
 394 struct coff_debug_merge_type
 395 {
 396   /* Next type with the same name.  */
 397   struct coff_debug_merge_type *next;
 398
 399   /* Class of type.  */
 400   int class;
 401
 402   /* Symbol index where this type is defined.  */
 403   long indx;
 404
 405   /* List of elements.  */
 406   struct coff_debug_merge_element *elements;
 407 };
 408
 409 /* Information we store in the debug merge hash table.  */
 410
 411 struct coff_debug_merge_hash_entry
 412 {
 413   struct bfd_hash_entry root;
 414
 415   /* A list of types with this name.  */
 416   struct coff_debug_merge_type *types;
 417 };
 418
 419 /* The debug merge hash table.  */
 420
 421 struct coff_debug_merge_hash_table
 422 {
 423   struct bfd_hash_table root;
 424 };
 425
 426 /* Initialize a COFF debug merge hash table.  */
 427
 428 #define coff_debug_merge_hash_table_init(table) \
 429   (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc, \
 430                         sizeof (struct coff_debug_merge_hash_entry)))
 431
 432 /* Free a COFF debug merge hash table.  */
 433
 434 #define coff_debug_merge_hash_table_free(table) \
 435   (bfd_hash_table_free (&(table)->root))
 436
 437 /* Look up an entry in a COFF debug merge hash table.  */
 438
 439 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
 440   ((struct coff_debug_merge_hash_entry *) \
 441    bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
 442
 443 /* Information we keep for each section in the output file when doing
 444    a relocatable link.  */
 445
 446 struct coff_link_section_info
 447 {
 448   /* The relocs to be output.  */
 449   struct internal_reloc *relocs;
 450   /* For each reloc against a global symbol whose index was not known
 451      when the reloc was handled, the global hash table entry.  */
 452   struct coff_link_hash_entry **rel_hashes;
 453 };
 454
 455 /* Information that we pass around while doing the final link step.  */
 456
 457 struct coff_final_link_info
 458 {
 459   /* General link information.  */
 460   struct bfd_link_info *info;
 461   /* Output BFD.  */
 462   bfd *output_bfd;
 463   /* Used to indicate failure in traversal routine.  */
 464   bfd_boolean failed;
 465   /* If doing "task linking" set only during the time when we want the
 466      global symbol writer to convert the storage class of defined global
 467      symbols from global to static. */
 468   bfd_boolean global_to_static;
 469   /* Hash table for long symbol names.  */
 470   struct bfd_strtab_hash *strtab;
 471   /* When doing a relocatable link, an array of information kept for
 472      each output section, indexed by the target_index field.  */
 473   struct coff_link_section_info *section_info;
 474   /* Symbol index of last C_FILE symbol (-1 if none).  */
 475   long last_file_index;
 476   /* Contents of last C_FILE symbol.  */
 477   struct internal_syment last_file;
 478   /* Symbol index of first aux entry of last .bf symbol with an empty
 479      endndx field (-1 if none).  */
 480   long last_bf_index;
 481   /* Contents of last_bf_index aux entry.  */
 482   union internal_auxent last_bf;
 483   /* Hash table used to merge debug information.  */
 484   struct coff_debug_merge_hash_table debug_merge;
 485   /* Buffer large enough to hold swapped symbols of any input file.  */
 486   struct internal_syment *internal_syms;
 487   /* Buffer large enough to hold sections of symbols of any input file.  */
 488   asection **sec_ptrs;
 489   /* Buffer large enough to hold output indices of symbols of any
 490      input file.  */
 491   long *sym_indices;
 492   /* Buffer large enough to hold output symbols for any input file.  */
 493   bfd_byte *outsyms;
 494   /* Buffer large enough to hold external line numbers for any input
 495      section.  */
 496   bfd_byte *linenos;
 497   /* Buffer large enough to hold any input section.  */
 498   bfd_byte *contents;
 499   /* Buffer large enough to hold external relocs of any input section.  */
 500   bfd_byte *external_relocs;
 501   /* Buffer large enough to hold swapped relocs of any input section.  */
 502   struct internal_reloc *internal_relocs;
 503 };
 504
 505 /* Most COFF variants have no way to record the alignment of a
 506    section.  This struct is used to set a specific alignment based on
 507    the name of the section.  */
 508
 509 struct coff_section_alignment_entry
 510 {
 511   /* The section name.  */
 512   const char *name;
 513
 514   /* This is either (unsigned int) -1, indicating that the section
 515      name must match exactly, or it is the number of letters which
 516      must match at the start of the name.  */
 517   unsigned int comparison_length;
 518
 519   /* These macros may be used to fill in the first two fields in a
 520      structure initialization.  */
 521 #define COFF_SECTION_NAME_EXACT_MATCH(name) (name), ((unsigned int) -1)
 522 #define COFF_SECTION_NAME_PARTIAL_MATCH(name) (name), (sizeof (name) - 1)
 523
 524   /* Only use this entry if the default section alignment for this
 525      target is at least that much (as a power of two).  If this field
 526      is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 527   unsigned int default_alignment_min;
 528
 529   /* Only use this entry if the default section alignment for this
 530      target is no greater than this (as a power of two).  If this
 531      field is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
 532   unsigned int default_alignment_max;
 533
 534 #define COFF_ALIGNMENT_FIELD_EMPTY ((unsigned int) -1)
 535
 536   /* The desired alignment for this section (as a power of two).  */
 537   unsigned int alignment_power;
 538 };
 539
 540 extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
 541   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 542 extern bfd_boolean _bfd_coff_link_hash_table_init
 543   (struct coff_link_hash_table *, bfd *,
 544    struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 545                                struct bfd_hash_table *,
 546                                const char *),
 547    unsigned int);
 548 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
 549   (bfd *);
 550 extern const char *_bfd_coff_internal_syment_name
 551   (bfd *, const struct internal_syment *, char *);
 552 extern bfd_boolean _bfd_coff_link_add_symbols
 553   (bfd *, struct bfd_link_info *);
 554 extern bfd_boolean _bfd_coff_final_link
 555   (bfd *, struct bfd_link_info *);
 556 extern struct internal_reloc *_bfd_coff_read_internal_relocs
 557   (bfd *, asection *, bfd_boolean, bfd_byte *, bfd_boolean,
 558    struct internal_reloc *);
 559 extern bfd_boolean _bfd_coff_generic_relocate_section
 560   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 561    struct internal_reloc *, struct internal_syment *, asection **);
 562 extern struct bfd_hash_entry *_bfd_coff_debug_merge_hash_newfunc
 563   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 564 extern bfd_boolean _bfd_coff_write_global_sym
 565   (struct coff_link_hash_entry *, void *);
 566 extern bfd_boolean _bfd_coff_write_task_globals
 567   (struct coff_link_hash_entry *, void *);
 568 extern bfd_boolean _bfd_coff_link_input_bfd
 569   (struct coff_final_link_info *, bfd *);
 570 extern bfd_boolean _bfd_coff_reloc_link_order
 571   (bfd *, struct coff_final_link_info *, asection *,
 572    struct bfd_link_order *);
 573
 574
 575 #define coff_get_section_contents_in_window \
 576   _bfd_generic_get_section_contents_in_window
 577
 578 /* Functions in xcofflink.c.  */
 579
 580 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound
 581   (bfd *);
 582 extern long _bfd_xcoff_canonicalize_dynamic_symtab
 583   (bfd *, asymbol **);
 584 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound
 585   (bfd *);
 586 extern long _bfd_xcoff_canonicalize_dynamic_reloc
 587   (bfd *, arelent **, asymbol **);
 588 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
 589   (bfd *);
 590 extern void _bfd_xcoff_bfd_link_hash_table_free
 591   (struct bfd_link_hash_table *);
 592 extern bfd_boolean _bfd_xcoff_bfd_link_add_symbols
 593   (bfd *, struct bfd_link_info *);
 594 extern bfd_boolean _bfd_xcoff_bfd_final_link
 595   (bfd *, struct bfd_link_info *);
 596 extern bfd_boolean _bfd_ppc_xcoff_relocate_section
 597   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 598    struct internal_reloc *, struct internal_syment *, asection **);
 599
 600 /* Functions in coff-ppc.c.  FIXME: These are called be pe.em in the
 601    linker, and so should start with bfd and be declared in bfd.h.  */
 602
 603 extern bfd_boolean ppc_allocate_toc_section
 604   (struct bfd_link_info *);
 605 extern bfd_boolean ppc_process_before_allocation
 606   (bfd *, struct bfd_link_info *);
 607
 608 /* Extracted from coffcode.h.  */
 609 typedef struct coff_ptr_struct
 610 {
 611   /* Remembers the offset from the first symbol in the file for
 612      this symbol. Generated by coff_renumber_symbols. */
 613   unsigned int offset;
 614
 615   /* Should the value of this symbol be renumbered.  Used for
 616      XCOFF C_BSTAT symbols.  Set by coff_slurp_symbol_table.  */
 617   unsigned int fix_value : 1;
 618
 619   /* Should the tag field of this symbol be renumbered.
 620      Created by coff_pointerize_aux. */
 621   unsigned int fix_tag : 1;
 622
 623   /* Should the endidx field of this symbol be renumbered.
 624      Created by coff_pointerize_aux. */
 625   unsigned int fix_end : 1;
 626
 627   /* Should the x_csect.x_scnlen field be renumbered.
 628      Created by coff_pointerize_aux. */
 629   unsigned int fix_scnlen : 1;
 630
 631   /* Fix up an XCOFF C_BINCL/C_EINCL symbol.  The value is the
 632      index into the line number entries.  Set by coff_slurp_symbol_table.  */
 633   unsigned int fix_line : 1;
 634
 635   /* The container for the symbol structure as read and translated
 636      from the file. */
 637   union
 638   {
 639     union internal_auxent auxent;
 640     struct internal_syment syment;
 641   } u;
 642 } combined_entry_type;
 643
 644
 645 /* Each canonical asymbol really looks like this: */
 646
 647 typedef struct coff_symbol_struct
 648 {
 649   /* The actual symbol which the rest of BFD works with */
 650   asymbol symbol;
 651
 652   /* A pointer to the hidden information for this symbol */
 653   combined_entry_type *native;
 654
 655   /* A pointer to the linenumber information for this symbol */
 656   struct lineno_cache_entry *lineno;
 657
 658   /* Have the line numbers been relocated yet ? */
 659   bfd_boolean done_lineno;
 660 } coff_symbol_type;
 661 /* COFF symbol classifications.  */
 662
 663 enum coff_symbol_classification
 664 {
 665   /* Global symbol.  */
 666   COFF_SYMBOL_GLOBAL,
 667   /* Common symbol.  */
 668   COFF_SYMBOL_COMMON,
 669   /* Undefined symbol.  */
 670   COFF_SYMBOL_UNDEFINED,
 671   /* Local symbol.  */
 672   COFF_SYMBOL_LOCAL,
 673   /* PE section symbol.  */
 674   COFF_SYMBOL_PE_SECTION
 675 };
 676
 677 typedef struct
 678 {
 679   void (*_bfd_coff_swap_aux_in)
 680     (bfd *, void *, int, int, int, int, void *);
 681
 682   void (*_bfd_coff_swap_sym_in)
 683     (bfd *, void *, void *);
 684
 685   void (*_bfd_coff_swap_lineno_in)
 686     (bfd *, void *, void *);
 687
 688   unsigned int (*_bfd_coff_swap_aux_out)
 689     (bfd *, void *, int, int, int, int, void *);
 690
 691   unsigned int (*_bfd_coff_swap_sym_out)
 692     (bfd *, void *, void *);
 693
 694   unsigned int (*_bfd_coff_swap_lineno_out)
 695     (bfd *, void *, void *);
 696
 697   unsigned int (*_bfd_coff_swap_reloc_out)
 698     (bfd *, void *, void *);
 699
 700   unsigned int (*_bfd_coff_swap_filehdr_out)
 701     (bfd *, void *, void *);
 702
 703   unsigned int (*_bfd_coff_swap_aouthdr_out)
 704     (bfd *, void *, void *);
 705
 706   unsigned int (*_bfd_coff_swap_scnhdr_out)
 707     (bfd *, void *, void *);
 708
 709   unsigned int _bfd_filhsz;
 710   unsigned int _bfd_aoutsz;
 711   unsigned int _bfd_scnhsz;
 712   unsigned int _bfd_symesz;
 713   unsigned int _bfd_auxesz;
 714   unsigned int _bfd_relsz;
 715   unsigned int _bfd_linesz;
 716   unsigned int _bfd_filnmlen;
 717   bfd_boolean _bfd_coff_long_filenames;
 718   bfd_boolean _bfd_coff_long_section_names;
 719   unsigned int _bfd_coff_default_section_alignment_power;
 720   bfd_boolean _bfd_coff_force_symnames_in_strings;
 721   unsigned int _bfd_coff_debug_string_prefix_length;
 722
 723   void (*_bfd_coff_swap_filehdr_in)
 724     (bfd *, void *, void *);
 725
 726   void (*_bfd_coff_swap_aouthdr_in)
 727     (bfd *, void *, void *);
 728
 729   void (*_bfd_coff_swap_scnhdr_in)
 730     (bfd *, void *, void *);
 731
 732   void (*_bfd_coff_swap_reloc_in)
 733     (bfd *abfd, void *, void *);
 734
 735   bfd_boolean (*_bfd_coff_bad_format_hook)
 736     (bfd *, void *);
 737
 738   bfd_boolean (*_bfd_coff_set_arch_mach_hook)
 739     (bfd *, void *);
 740
 741   void * (*_bfd_coff_mkobject_hook)
 742     (bfd *, void *, void *);
 743
 744   bfd_boolean (*_bfd_styp_to_sec_flags_hook)
 745     (bfd *, void *, const char *, asection *, flagword *);
 746
 747   void (*_bfd_set_alignment_hook)
 748     (bfd *, asection *, void *);
 749
 750   bfd_boolean (*_bfd_coff_slurp_symbol_table)
 751     (bfd *);
 752
 753   bfd_boolean (*_bfd_coff_symname_in_debug)
 754     (bfd *, struct internal_syment *);
 755
 756   bfd_boolean (*_bfd_coff_pointerize_aux_hook)
 757     (bfd *, combined_entry_type *, combined_entry_type *,
 758             unsigned int, combined_entry_type *);
 759
 760   bfd_boolean (*_bfd_coff_print_aux)
 761     (bfd *, FILE *, combined_entry_type *, combined_entry_type *,
 762             combined_entry_type *, unsigned int);
 763
 764   void (*_bfd_coff_reloc16_extra_cases)
 765     (bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
 766            bfd_byte *, unsigned int *, unsigned int *);
 767
 768   int (*_bfd_coff_reloc16_estimate)
 769     (bfd *, asection *, arelent *, unsigned int,
 770             struct bfd_link_info *);
 771
 772   enum coff_symbol_classification (*_bfd_coff_classify_symbol)
 773     (bfd *, struct internal_syment *);
 774
 775   bfd_boolean (*_bfd_coff_compute_section_file_positions)
 776     (bfd *);
 777
 778   bfd_boolean (*_bfd_coff_start_final_link)
 779     (bfd *, struct bfd_link_info *);
 780
 781   bfd_boolean (*_bfd_coff_relocate_section)
 782     (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 783             struct internal_reloc *, struct internal_syment *, asection **);
 784
 785   reloc_howto_type *(*_bfd_coff_rtype_to_howto)
 786     (bfd *, asection *, struct internal_reloc *,
 787             struct coff_link_hash_entry *, struct internal_syment *,
 788             bfd_vma *);
 789
 790   bfd_boolean (*_bfd_coff_adjust_symndx)
 791     (bfd *, struct bfd_link_info *, bfd *, asection *,
 792             struct internal_reloc *, bfd_boolean *);
 793
 794   bfd_boolean (*_bfd_coff_link_add_one_symbol)
 795     (struct bfd_link_info *, bfd *, const char *, flagword,
 796             asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
 797             struct bfd_link_hash_entry **);
 798
 799   bfd_boolean (*_bfd_coff_link_output_has_begun)
 800     (bfd *, struct coff_final_link_info *);
 801
 802   bfd_boolean (*_bfd_coff_final_link_postscript)
 803     (bfd *, struct coff_final_link_info *);
 804
 805 } bfd_coff_backend_data;
 806
 807 #define coff_backend_info(abfd) \
 808   ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
 809
 810 #define bfd_coff_swap_aux_in(a,e,t,c,ind,num,i) \
 811   ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,ind,num,i))
 812
 813 #define bfd_coff_swap_sym_in(a,e,i) \
 814   ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
 815
 816 #define bfd_coff_swap_lineno_in(a,e,i) \
 817   ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
 818
 819 #define bfd_coff_swap_reloc_out(abfd, i, o) \
 820   ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
 821
 822 #define bfd_coff_swap_lineno_out(abfd, i, o) \
 823   ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
 824
 825 #define bfd_coff_swap_aux_out(a,i,t,c,ind,num,o) \
 826   ((coff_backend_info (a)->_bfd_coff_swap_aux_out) (a,i,t,c,ind,num,o))
 827
 828 #define bfd_coff_swap_sym_out(abfd, i,o) \
 829   ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
 830
 831 #define bfd_coff_swap_scnhdr_out(abfd, i,o) \
 832   ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
 833
 834 #define bfd_coff_swap_filehdr_out(abfd, i,o) \
 835   ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
 836
 837 #define bfd_coff_swap_aouthdr_out(abfd, i,o) \
 838   ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
 839
 840 #define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
 841 #define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
 842 #define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
 843 #define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
 844 #define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
 845 #define bfd_coff_relsz(abfd)  (coff_backend_info (abfd)->_bfd_relsz)
 846 #define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
 847 #define bfd_coff_filnmlen(abfd) (coff_backend_info (abfd)->_bfd_filnmlen)
 848 #define bfd_coff_long_filenames(abfd) \
 849   (coff_backend_info (abfd)->_bfd_coff_long_filenames)
 850 #define bfd_coff_long_section_names(abfd) \
 851   (coff_backend_info (abfd)->_bfd_coff_long_section_names)
 852 #define bfd_coff_default_section_alignment_power(abfd) \
 853   (coff_backend_info (abfd)->_bfd_coff_default_section_alignment_power)
 854 #define bfd_coff_swap_filehdr_in(abfd, i,o) \
 855   ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
 856
 857 #define bfd_coff_swap_aouthdr_in(abfd, i,o) \
 858   ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
 859
 860 #define bfd_coff_swap_scnhdr_in(abfd, i,o) \
 861   ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
 862
 863 #define bfd_coff_swap_reloc_in(abfd, i, o) \
 864   ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_in) (abfd, i, o))
 865
 866 #define bfd_coff_bad_format_hook(abfd, filehdr) \
 867   ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
 868
 869 #define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
 870   ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
 871 #define bfd_coff_mkobject_hook(abfd, filehdr, aouthdr)\
 872   ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook)\
 873    (abfd, filehdr, aouthdr))
 874
 875 #define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr, name, section, flags_ptr)\
 876   ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook)\
 877    (abfd, scnhdr, name, section, flags_ptr))
 878
 879 #define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
 880   ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
 881
 882 #define bfd_coff_slurp_symbol_table(abfd)\
 883   ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
 884
 885 #define bfd_coff_symname_in_debug(abfd, sym)\
 886   ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
 887
 888 #define bfd_coff_force_symnames_in_strings(abfd)\
 889   (coff_backend_info (abfd)->_bfd_coff_force_symnames_in_strings)
 890
 891 #define bfd_coff_debug_string_prefix_length(abfd)\
 892   (coff_backend_info (abfd)->_bfd_coff_debug_string_prefix_length)
 893
 894 #define bfd_coff_print_aux(abfd, file, base, symbol, aux, indaux)\
 895   ((coff_backend_info (abfd)->_bfd_coff_print_aux)\
 896    (abfd, file, base, symbol, aux, indaux))
 897
 898 #define bfd_coff_reloc16_extra_cases(abfd, link_info, link_order,\
 899                                      reloc, data, src_ptr, dst_ptr)\
 900   ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
 901    (abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr))
 902
 903 #define bfd_coff_reloc16_estimate(abfd, section, reloc, shrink, link_info)\
 904   ((coff_backend_info (abfd)->_bfd_coff_reloc16_estimate)\
 905    (abfd, section, reloc, shrink, link_info))
 906
 907 #define bfd_coff_classify_symbol(abfd, sym)\
 908   ((coff_backend_info (abfd)->_bfd_coff_classify_symbol)\
 909    (abfd, sym))
 910
 911 #define bfd_coff_compute_section_file_positions(abfd)\
 912   ((coff_backend_info (abfd)->_bfd_coff_compute_section_file_positions)\
 913    (abfd))
 914
 915 #define bfd_coff_start_final_link(obfd, info)\
 916   ((coff_backend_info (obfd)->_bfd_coff_start_final_link)\
 917    (obfd, info))
 918 #define bfd_coff_relocate_section(obfd,info,ibfd,o,con,rel,isyms,secs)\
 919   ((coff_backend_info (ibfd)->_bfd_coff_relocate_section)\
 920    (obfd, info, ibfd, o, con, rel, isyms, secs))
 921 #define bfd_coff_rtype_to_howto(abfd, sec, rel, h, sym, addendp)\
 922   ((coff_backend_info (abfd)->_bfd_coff_rtype_to_howto)\
 923    (abfd, sec, rel, h, sym, addendp))
 924 #define bfd_coff_adjust_symndx(obfd, info, ibfd, sec, rel, adjustedp)\
 925   ((coff_backend_info (abfd)->_bfd_coff_adjust_symndx)\
 926    (obfd, info, ibfd, sec, rel, adjustedp))
 927 #define bfd_coff_link_add_one_symbol(info, abfd, name, flags, section,\
 928                                      value, string, cp, coll, hashp)\
 929   ((coff_backend_info (abfd)->_bfd_coff_link_add_one_symbol)\
 930    (info, abfd, name, flags, section, value, string, cp, coll, hashp))
 931
 932 #define bfd_coff_link_output_has_begun(a,p) \
 933   ((coff_backend_info (a)->_bfd_coff_link_output_has_begun) (a, p))
 934 #define bfd_coff_final_link_postscript(a,p) \
 935   ((coff_backend_info (a)->_bfd_coff_final_link_postscript) (a, p))
 936